package logic

import (
	"context"
	"database/sql"

	"muyu-apiserver/model"
	"muyu-apiserver/pkg/tenantctx"
	"muyu-apiserver/pkg/uid"
	"muyu-apiserver/rpc/purchase/internal/svc"
	"muyu-apiserver/rpc/purchase/pb"

	"github.com/zeromicro/go-zero/core/logx"
)

type CreateSupplierLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewCreateSupplierLogic(ctx context.Context, svcCtx *svc.ServiceContext) *CreateSupplierLogic {
	return &CreateSupplierLogic{ctx: ctx, svcCtx: svcCtx, Logger: logx.WithContext(ctx)}
}

func (l *CreateSupplierLogic) CreateSupplier(in *pb.CreateSupplierReq) (*pb.IdResp, error) {
	tenantId := tenantctx.ExtractTenantId(l.ctx)

	existing, err := l.svcCtx.SupplierModel.FindOneByNameAndTenant(l.ctx, tenantId, in.SupplierName)
	if err == nil && existing != nil {
		return nil, ErrSupplierNameExists
	}

	supplierId := uid.Generate()
	_, err = l.svcCtx.SupplierModel.Insert(l.ctx, &model.PurSupplier{
		SupplierId:   supplierId,
		TenantId:     tenantId,
		SupplierName: in.SupplierName,
		Phone:        in.Phone,
		Status:       1,
		Remark:       sql.NullString{String: in.Remark, Valid: in.Remark != ""},
	})
	if err != nil {
		return nil, err
	}
	return &pb.IdResp{Id: supplierId}, nil
}